Q: What are the prime factors of the number 53,161,392?

 A: 2, 3, 19, 71, 821

Why are those the prime factors of the number 53,161,392?

Prime factors are the prime numbers that can be multipled together to equal the original number. You find the factors by dividing by prime numbers. It is best shown by creating a Factor Tree.

Factor Tree for the number 53,161,392

53,161,392
Factor Arrows
226,580,696
Factor Arrows
213,290,348
Factor Arrows
26,645,174
Factor Arrows
23,322,587
Factor Arrows
31,107,529
Factor Arrows
1958,291
Factor Arrows
71821

The numbers in bold above are the prime factors. If there are multiples, you only count them one time. This leads us to our prime factors of:

2, 3, 19, 71, 821

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 19 x 71 x 821 = 53,161,392

This can also be written as 24 x 31 x 191 x 711 x 8211 = 53,161,392

If you would like to know more, or need additional explanation, please review our prime factorization explanation.


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